And will there be errors in my https connections such as not everything is transmitted over http in this case?
– DeqqDec 21 '14 at 12:19

How you setup cloudflare/nginx has no bearing on that, the html contents will determine if there are such errors reported.
– AD7sixDec 21 '14 at 12:49

The first line of this answer is incorrect: the connection between the browser and CloudFlare is TLS encrypted, the connection from CloudFlare to the origin server is http. Redirect loops can be caused by page rules or high level setting specifying the encryption type incorrectly - eg full when you really need flexible.
– TimApr 10 '16 at 4:48

@JLSJonas "there are 2 solutions to force https connections using their flexible ssl solution." Please don't edit this answer again to be about using full SSL, that is a different answer (which you are welcome to add)
– AD7sixJun 1 '16 at 20:32

Full (strict) only works if the origin web server has a valid SSL certificate with a valid certificate chain. Full works with any SSL certificate, including self signed. This isn't a good answer to the question.
– TimOct 1 '16 at 20:40

Yes, I see now, the question mentioned the Flexible certificate. I will improve my answer thanks to your feedback and I will be more specific. We are improving the knowledge base in here. A valid SSL certificate has the best value for Google if we consider SEO perspective. I am not in regret after posting this.
– prostiOct 1 '16 at 23:18

Flexible/full/strict makes no difference to SEO, that setting is for connection to the origin server. Cloudflare presents a shared https certificate to whoever requests the page, how it connects to the origin is largely irrelevant.
– TimOct 1 '16 at 23:54

Assuming the server does have a valid SSL cert (the OP doesn't specify, and I came here via an similar config google), this is a great option - note it can also be scoped to a particular subdomain via the Page Rules.
– skoczenOct 17 '17 at 3:46

This is a super good answer for me that had a valid SSL.
– PhilipOct 23 '17 at 15:00

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